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Showing content from https://github.com/orafce/orafce below:

orafce/orafce: The "orafce" project implements in Postgres some of the functions from the Oracle database that are missing (or behaving differently).Those functions were verified on Oracle 10g, and the module is useful for production work.

This package contains some useful string and character functions. Each function supports positive and negative offsets — i.e., offset from the end of the string. For example:

plvstr.left('abcdef',2) -> ab
plvstr.left('abcdef',-2) -> abcd
plvstr.substr('abcdef',1,1) -> a
plvstr.substr('abcdef',-1,1) -> f
plvstr.substr('abcde',-2,1) -> d

• plvstr.normalize(str text) - Normalize string - Replace white chars by space, replace spaces by space

• plvstr.is_prefix(str text, prefix text, cs bool) - Returns true, if prefix is prefix of str

• plvstr.is_prefix(str text, prefix text) - Returns true, if prefix is prefix of str

• plvstr.is_prefix(str int, prefix int) - Returns true, if prefix is prefix of str

• plvstr.is_prefix(str bigint, prefix bigint) - Returns true, if prefix is prefix of str

• plvstr.substr(str text, start int, len int) - Returns substring started on start_in to end

• plvstr.substr(str text, start int) - Returns substring started on start_in to end

• plvstr.instr(str text, patt text, start int, nth int) - Search pattern in string

• plvstr.instr(str text, patt text, start int) - Search pattern in string

• plvstr.instr(str text, patt text) - Search pattern in string

• plvstr.lpart(str text, div text, start int, nth int, all_if_notfound bool) - Call this function to return the left part of a string

• plvstr.lpart(str text, div text, start int, nth int) - Call this function to return the left part of a string

• plvstr.lpart(str text, div text, start int) - Call this function to return the left part of a string

• plvstr.lpart(str text, div text) - Call this function to return the left part of a string

• plvstr.rpart(str text, div text, start int, nth int, all_if_notfound bool) - Call this function to return the right part of a string

• plvstr.rpart(str text, div text, start int, nth int) - Call this function to return the right part of a string

• plvstr.rpart(str text, div text, start int) - Call this function to return the right part of a string

• plvstr.rpart(str text, div text) - Call this function to return the right part of a string

• plvstr.lstrip(str text, substr text, num int) - Call this function to remove characters from the beginning

• plvstr.lstrip(str text, substr text) - Call this function to remove characters from the beginning

• plvstr.rstrip(str text, substr text, num int) - Call this function to remove characters from the end

• plvstr.rstrip(str text, substr text) - Call this function to remove characters from the end

• plvstr.rvrs(str text, start int, _end int) - Reverse string or part of string

• plvstr.rvrs(str text, start int) - Reverse string or part of string

• plvstr.rvrs(str text) - Reverse string or part of string

• plvstr.left(str text, n int) - Returns firs num_in characters. You can use negative num_in

• plvstr.right(str text, n int) - Returns last num_in characters. You can use negative num_ni

• plvstr.swap(str text, replace text, start int, length int) - Replace a substring in a string with a specified string

• plvstr.swap(str text, replace text) - Replace a substring in a string with a specified string

• plvstr.betwn(str text, start int, _end int, inclusive bool) - Find the Substring Between Start and End Locations

• plvstr.betwn(str text, start text, _end text, startnth int, endnth int, inclusive bool, gotoend bool) - Find the Substring Between Start and End Locations

• plvstr.betwn(str text, start text, _end text) - Find the Substring Between Start and End Locations

• plvstr.betwn(str text, start text, _end text, startnth int, endnth int) - Find the Substring Between Start and End Locations

• plvchr.nth(str text, n int) - Call this function to return the Nth character in a string

• plvchr.first(str text) - Call this function to return the first character in a string

• plvchr.last(str text) - Call this function to return the last character in a string

• plvchr.is_blank(c int) - Is blank

• plvchr.is_blank(c text) - Is blank

• plvchr.is_digit(c int) - Is digit

• plvchr.is_digit(c text) - Is digit

• plvchr.is_quote(c int) - Is quote

• plvchr.is_quote(c text) - Is quote

• plvchr.is_other(c int) - Is other

• plvchr.is_other(c text) - Is other

• plvchr.is_letter(c int) - Is letter

• plvchr.is_letter(c text) - Is letter

• plvchr.char_name(c text) - Returns the name of the character to ascii code as a VARCHAR.

• plvchr.quoted1(str text) - Quoted text between '''

• plvchr.quoted2(str text) - Quoted text between '"'

• plvchr.stripped(str text, char_in text) - Strips a string of all instances of the specified characters

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